Confirming the Delayed Lenz Effect

[gyulasun]

Hi NoBull,

If you have not seen the second part of those tests, here it is: http://www.youtube.com/watch?v=BsN2sr3U0PY

I agree with what you wrote.  You can find a new thread on these videos on this forum started by Hel who speculated whether the test was a hoax and  where I have given a possible explanation for the phenomena. 
This is the link to that thread: http://www.overunity.com/13313/please-disproof-this-video-it-could-be-a-hoax/msg353207/

rgds, Gyula

[DeepCut]

Thanks nobull, and thanks gyula for the second link.

What do you think of the effect in a rotor riven by a DC motor, both current draw decrease and rotor speed increase ?


Cheers,

DC.

[gyulasun]

Hi Deepcut,

It would help me if you explain a bit more details on the setup you think of...  sorry.  You mean the phenomena in the video NoBull referred to here or something else?

Gyula

[DeepCut]

I mean delayed lenz, is it something more than just increasing the rise time in the coil ?


DC.

[hoptoad]

I mean delayed lenz, is it something more than just increasing the rise time in the coil ?
DC.

With reference to a rotor driven by a dc motor, the rise time of the generating coils is not the cause of the AUL (acceleration under load) and the resultant reduced dc motor drive current.

Rather, when the generator coil is sufficiently loaded at a given rpm, (frequency), the current delivered by the coil will be phase shifted with respect to the voltage, within the coil.

It is a delayed current phase with respect to voltage (within the generator coil) that causes the "delayed lenz" effect.
The magnetic drag of the cores and the counter mmf produced by the coils with respect to the inducing rotor magnets are both greatly reduced by the delayed current (phase shifted wrtV).

It is specifically the ratio between the total combined resistance of the load and the coil itself, and the inductive reactance of the coil, that matters most.

Since the inductive reactance of any coil increases with frequency, then the frequency of the generated AC will determine whether current phase (within the coil) lags (i.e delayed wrtV) and AUL occurs, or whether normal counter mmf occurs with a resultant DUL, because the current phase shift is less than 45 degrees.

The same coil that causes DUL (deceleration under load ) when the rpm of a given rotor is, lets say, 2000 rpm, will likely surprise you by showing AUL when the rpm is 3000, because at the higher rotor speed, (higher frequency), there will be a greater coil current phase shift when under load, than at 2000 rpm.

Hope that's clearer than mud ....... KneeDeep
Cheers